South Windsor’s Planning and Zoning Commission, on Wednesday, unanimously approved a year-long moratorium on acceptance of new applications for warehouses, distribution centers and freight terminals. The commission came close to approving the moratorium at its March 22 meeting. However, members opted to extend the hearing after the commission decided to include freight terminals in the ban and an attorney at the meeting raised concerns the proposal had not been available in the Town Clerk’s office. South Windsor, a town of about 27,000 residents, has added seven large distribution centers and warehouses since 2009, ranging from a 176,763-square-foot building for food-and-beverage distributor Vistar, to a 652,000-square-foot building for discount supermarket Aldi. The moratorium is intended to allow the town a pause in development pressure while it adopts regulation allowing officials stronger controls.